[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
newsies 1-7 aug. '97
o Estrogen and Alzheimer's Disease: What Is the Connection?
If estrogen loss impairs cognitive status, could estrogen
replacement delay or prevent cognitive decline? Two psychiatric
researchers examine the studies attempting to answer this
question. [Medscape Mental Health 2(7), 1997]
MedPulse is Medscape's email newsletter informing registered
members of new content posted on the world's leading medical
READ THE FULL-TEXT ARTICLES ON THE WORLD WIDE WEB at:
Links to articles featured below may be found at:
3 The Vancouver Sun August 1, 1997 Strangely deformed frogs in
Minnesota puzzle researchers: Researchers consider frogs important
ecological indicators of the health of the environment. frogs have
[*]distended bladders and unusually thin testes[*], an expert says.
4 08/01 Tainted Wells LOS ANGELES (AP) A hazardous chemical used
to make solid rocket boosters was detected at high enough levels to
prompt health officials to shut down 18 municipal wells.
Perchlorate had never been detected in the nation's drinking
18 08/02 Manatee Virus By EVAN PEREZ MIAMI (AP) For the first
time, researchers have found manatees suffering from viral
infections, raising worries that the endangered sea mammal now has
a new threat. The virus caused skin lesions for two manatees living
Enviro-Newsbrief August 1, 1997
The following is a daily update summarizing news of interest
to EPA staff. It includes information from current news sources:
newspapers, newsletters, and other publications. For more
information, contact the EPA Headquarters Information Resources
Center at (202) 260-5922, or e-mail LIBRARY-HQ.
**Viewpoints expressed in the following summaries do not
necessarily reflect EPA policy**
** ENDOCRINE DISRUPTORS **
Scientist Retracts Groundbreaking Study on 'Endocrine
Disruptors'. Inside E.P.A. Weekly Report, August 1, 1997, pp1,6.
A groundbreaking study which suggested that mixtures of
endocrine disrupting chemicals are more toxic than single
chemicals was retracted by the lead scientist on the project.
The study, published in the journal _Science_ last year, was
conducted by a group of scientists at the Tulane Bioenvironmental
Research Center in New Orleans and led by Dr. John McLachlan, a
former scientific director of the National Institute of
Environmental Health Sciences.
McLachlan concluded that exposure to individual chemicals
produced nearly no effect, but when two or more chemicals were
combined, the mixture's toxic potency rose dramatically. The
study resulted in widespread controversy.
McLachlan and his colleagues retracted their findings,
claiming that they, and other scientists, have been unable to
duplicate their findings.
According to a July 25 letter published in _Science_,
McLachlan claimed that after failing to duplicate the results,
"it seems evident that there must have been a fundamental flaw in
the design of our original experiment." McLachlan added that
"people in many walks of life have, on their own, put great
weight on this report as the basis of much discussion, thought,
and even public policy." As a result, "it is clear that any
conclusions drawn from this paper must be suspended until such
time, if ever, the data can be substantiated."
Industry groups are hailing the move. Environmentalists feel
the study was shelved too swiftly and that scientists would need
several years to replicate the findings.
** MERCURY **
Science Advisory Board Endorses EPA's Controversial Mercury Report. Inside
E.P.A. Weekly Report, August 1, 1997, pp5-6.
EPA's Science Advisory Board gave an overall endorsement
last week, of the agency's controversial report on the health
risks of mercury. The decision could mean the long-awaited study
will be finalized by the end of the year, according to some staff
EPA has tried to release the report since 1995 as required
by section 112(n) of the Clean Air Act, which analyzes the
sources of mercury pollution and the health effects of mercury
exposure. EPA has almost released the report twice, but stopped
in both instances due to criticism from other agencies. The Food
and Drug Administration has particularly been a vocal critic of
the study, claiming that it will unnecessarily shake the public's
confidence in the safety of seafood.
EPA decided in April 1996 to delay the release of the report
until the SAB had a chance to review the study.
The subcommittee did not agree with some areas of the study
but felt these concerns would not warrant stopping finalization
of the report.
Planet Ark is a source for daily Reuters World Environment News
provided by the Planet Ark
Environmental Foundation. Designed to inform about current
issues and opportunities for action,
the site includes free environmental software, celebrity
campaigns, videos and RealAudio information.
There is an eco-store and 150-topic "enviro-search engine" for
keeping better-informed about
environmental issues. Planet Ark is an independent environmental
organization that strives to bring
about real change by working with business and by showing the
average person how to help the
planet in their day to day lives.